Ventilating sectional smoke jack



April 20, 1926. 1,581,979

' J. W. ORROCK VENTILATING SECTIONAL SMOKE JACK Filed August 27, 9 5 s Sheets-Sheet 1 Fig 1 l 0 '3 6 /b" KL M 16' i wuankoc J; warr-oeit April 20 1926. I 1,581,979

J. Vke. ORRQCK VENTILATING SECTIONAL SMOKE JACK gwmntoa Patented Apr. 20, 1926 UNITED STATES PATE.

JOHN WILSON" onnoox, or MONTREAL, QUEBEC, CANADA' VENTILATING SECTIONAL SMOKE JACK.

Application filed August 27, 1925.. Se1'ia1 No. 52,949.

To all whom it may concern:

Be it known that 1, JOHN WILSON OR- ROCK, a subject of the King of Great Britain, residingv at Montreal, in the Province of Quebec and Dominionof Canada, have invented certain new and useful Improvements in Ventilating Sectional Smoke Jacks, of which the followingisa specification.

This invention relates to smoke jacks adapted for use in round houses, engine houses and the like to assist the escape of smoke from the stacks of locomotives and tlflfe escape of steam when a boiler is blown a One of the objects of the invention is to provide a jack consisting of flat, sections made of any suitable material that may be easily handled, and can be shipped in small bulk, thereby to facilitate transportation and assembly on the job.v This construction has the advantage that many pieces are alike and interchangeable, and when put together form a box-like structure which 18 very strong, stable and'durable thereby reducing installation and maintenance costs to a nummum. Also, the sectlonal design simplifies the manufacture, enables the use of standard material, and involves less risk, breakage, and damage in handling.

A further object is to provide a sectional ventilating smoke jack which not only conducts the smoke or steam. from the stack of a locomotive directly to the outside of. the house or other enclosure, but also assists in ventilating the space beneath the roof due to the fact that two sides of the interior portion of the jack form ventilating openings located substantially at roof or ceiling level. With the above and other objects in view which will more readily appear as the nature of the invention 'is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described,illustrated and claimed. V A preferred and practical embodiment of the invention is shown in the accompanying drawings, in which Figure 1 is avertical sectional view of the improved construction.

Figure 2is a vertical sectional view taken on the line 2.2 of Fig. 1, showing the sides of the jack in elevation.

Figure 3 is a plan View of the opening cut in the roofof the house or other struc ture. I,

view of one of view of one of the extension sections for the main side sections. 7

Figure 8 is a plan view of the top or cover- I Figure 9' is a detail view illustrating the change necessary to accommodate a. roof vent when encountered.

Similar reference characters designate corresponding parts throughout the several figures of the drawings.

The present inventlon relates particularly to a ventilating sectional smoke stack construction comprising sections adapted to be made up in the shop and then shipped to the point of installation, and has in view certain improvements on my former Patents Nos. 1,150,87 8 dated August 24,1915, and 1,314,- 016 dated August 26, 1919. In the respect that the present invention contemplates a sect onal ventilating smoke jack the present mvention represents a carrying forward of the idea shown in my Patent No. 1,314,016 aforesaid. By reference to the accompanying drawmgs it will be observed that one of the distinctive features of the present construction resldes in providing adequate ventilating openings located substantially at roofor ceiling level thereby to more adequately provide for the removal or carrying off of the gases collected beneath the roof due to. the ejector action setup by the forced orinduced draft incident to the rush of smoke or steam pass-' ing throu h the interior hood portion of the device. K further feature resides in form ing the main side sections in such a waythat they take a direct bearing on the roof of the structure on which the smoke jack is installed.

1 As will be observed from Figs. 4 to 8 inclusive the present construction includes in its organization the main side-section s A, the endsections B, the exterior flue-sections C, the extension sections D for the main sidesections, and the top or cover piece E- The main side sections A preferably consist of a body 1 having the upwardly inclined side edges 2 which converge toward the cap or tion 3 of said section and intersect the .0t-

tom edge ofthe cap portion 3 at a point inside of the outer corners 4 thereof, thereby to provide the roof engaging shoulders 5. The side edges of the cap portion 3 are also inclined upwardly but at less pitch than the side edges 2, thus providing the main section A with two pairs of inclined, and convergently related side edges, one pair arranged below the roof and the other above the same. The end sections B are preferably of substantially rectangular formation and the side edges 6 thereof are aeapted to be fastened to the inclined edges 2 of the main side sections 1. The upper corners of the end-sections are notched or recessed as indicated at 7 thereby to permit the upper edges 8 of the endsections to project up vardly above the level of the roof R as shown in Fig. 1. The endsections B are duplicate and intercnangeable for either end of the main side sections, and are therefore of standard size and design.

The cap portions 3 of the main side-sections 1 which project above the roof R cooperate with the side-sections C and the extension-section I) to provide an exhaust flue which communicates with the hood H formed by the sides A and the ends B, and also with the relatively large ventilating openings 9 located substantially at roof or ceiling level and communicating with the space under the roof R.

The fine forming sections C and D are preferably provided with. the openings 10 so that when the cover piece E is applied thereto the smoke, steam or other gases may readily exhaust yet at the same time the cover piece E willprevent rain or the like falling into the building through the smoke jack.

In connection with the cap portion 3 of the main side sections, and the extension sec tions .D, it will be observed that the sides thereof are inclined upwardly thereby to provide an exhaust flue which tapers toward the discharge end throughout one of its dimensions, thus havingthe effect of stimulating ejector action to carry off gases or the like accumulated beneath the roof.

In installing the device, which as previously indicated, may be shipped in knockeddown form, due to its sectional construction, it isproposed to out a hole 11 in the roof R, the sides 12 of the hole being provided with the corner abutments 18 for cooperating with the shoulders 5 of the main side sections A. After the hole 11 is cut in accordance with the configuration shown in Fig. 8 the side sections 1 may be lifted through the opening and then shifted laterally until the shoulders 5 rest upon the corner abutments 13, thereby supporting the main sections directly on the roof. To assist in securing the side sections A the same may be bolted as indicated at 1 1 (Fig. 1) to the cross beam 15 carried by the rafters 16. Thus, in addition to supporting the side sections directly on the outside or top of the roof the fastenings 14 may be utilized to insure permanency and stability. In installing the device however, the shoulders 5 and corner abutments 13 have the advantage of supporting the side sections A while assembling the hood H. If desired the fastenings 14: may be dispensed with entirely, the same being utilized merely for the sake of providing additional support and also distributing the weight of the hood to the rafters 16 where that is desirable.

The sections C and D which cooperate ith the cap portion 3 of the main side sections A are preferably secured together at their meeting edges by nails, screws or equivalent fastenings, and to provide a practical and durable connection between the flue and the outside of the roof a collar 17 may be built about the lower end of the member C and the cap or head portion 3. This collar may be fitted with a galvanized iron or other flashing 18 to provide a water-tight connec tion between the flue and the roof.

As shown in Fig. 9 the collar 17 and the side of the jack may be cut to connect with the roof vent R" when encountered. This however is a mere expedient of installation incident to certain types of roof construction and does not alter the function or structural features of the invention.

From the foregoing it will be apparentthat the present sectional type of constructi on'carries forth the idea of my former Patent No. 1,314,016 supra in a thoroughly practical and effective manner. The various sections of the jack may be readily made in shops or other convenient places and readily transported to remote points of installation where only the services of a carpenter or other workman are required to erect and assemble.

lVithout further description it is thought that the features and advantages of the present invention will be readily apparent to those skilled in the are, and it will of course be understood that changes in the form. proportion and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claims. In that connection it may be pointed out that the present construction embodies features that make it possible to use other materials than wood, such for example as asbestos, sheets of concrete, metal and the like. Thus, while the drawings illustrate a wood vjack of mill type construction, it will be understood that the embodi ment shown. merely is an example of one way of carrying the invention into effect, the construction being such that any other material may be selected.

I claim 1. In a ventilating smoke jack, the combination with a roof'having an opening, of a llti shoulder portions adapted to restupon the side edges of the openlng in the roof, end sections carried by the main sections and arranged to provide vent ports between the end members and the root, and an exhaust flue cooperatingwith the main sections and communicating with the interior of the structure through said vent ports.

2. In a ventilating smoke jack, the. com bination with a roof having an opening,.of a pair of main sections having intermediate shoulder portions adapted torest upon the side edges of the opening in the root, end

' sections carried by the main sections and projecting through the opening in the roof to provide vent ports between the end members and the root, and an exhaust flue cooperating with the main sections and communicating with the interior of the structure through said vent ports.

3. In a ventilating smoke jack, the combination witha roof having an opening, of an interior hood having converging en walls and intermediate shoulder portions adapted to engage with the said opening and the diverging sides oi said hood being spaced from the sides of the opening lying at right angles to the sideof the opening engaged by the main section, and an exhaust flue assembled about the portion of the hood which projects exteriorly oi"- the roof.

4. In a ventilating smoke jack, the combination with a roof having an opening, of side sections having two pairs of inclined side edges disposed respectively above and below the roof level, and sections cooperating with said pairs of inclined sides respectively to form an interior converging exhaust hood and an exterior tapering exhaust flue, and said side sections which form the hood being spaced from the roof opening to provide vent ports communicating with the exhaust flue.

5. In a ventilating smoke jack, the combination with a roof having an opening, of

side sections having two pairs of convergently related side edges having an intermediate roof engaging shoulder therebetween, end sections cooperating with the lower pair of converging side edges to provide an interior hood, and said end sections being spaced from the edges of the opening to provide vent ports at roof level, and flue sections as sembled above the roof opening, and certain of said sections being secured to the other pair of inclined side edges of the side forming sections thereby to provide a tapering exhaust flue. I

6. In a ventilating smoke jack, the combination with a roofhaving'an opening, of

side sections having inclined edgesand end roof adjacent sections fitted to said inclined sides and comprising an interior hood, an exterior cap portion formed on said side sections and having inclined edges of less pitch than the edges of the'side sections and said end sec-' tions projecting through the roof opening but spaced from the edges thereof to provide vent ports at roof level, flue forming sections comprising an extension member for the cap portion andhaving side edges conforming to the'pitch of the edges of the cap portion, and other flue forming sections secured to the tapering edges of said cap portion and the extension section.

7 In a ventilatingsmoke jack, the combination with a root having an opening, of a hood including converging end walls and a shouldered portion adapted to engage with the opening and projecting exteriorly of the roof while said converging sides thereof are spaced from other sides of the opening to.

provide vent ports-at ceiling level, and an "exhaust flue built about and cooperating with the exteriorly projecting portion of the hood. I

8. In a ventilatin nation with a roof having an opening, of a hood comprising side sections including portions adapted to lie below'and above the roof and having inclined sides, end mem bers fitted to'the inclined edges of the portion of the side sections lying below the roof and spaced from the edge of the opening to provide vent ports, and flue forming sections fitted to theinclined edges of the portion of the side sections which project above the root level thereby to providea tapering exhaust flue. I

9. In a ventilating smoke jack the combination with the roof having an opening formed with corner abutments, of side sections having intermediate shoulder portions adapted torest upon said corner abutments, end sections carried by the side sections beneath the shoulder portions and spaced from the edges of the opening to provide vent ports at roof level, and flue sections assembled about the portion of the side sections which project above the root level.

10. In a knock down ventilating smoke j ack construction, the combination with main side sections having intermediate roof smoke jack, the combii engaging shoulders, end sections adapted to JOHN; WILSON ORROGK. 

